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The skin depth of a conductor with attenuation constant of 7 neper/m is

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The skin depth of a conductor with attenuation constant of 7 neper/m is

(a) 14

(b) 49

(c) 7

(d) 1/7

The question was posed to me in unit test.

Question is taken from Plane Waves in Good Conductor in chapter EM Wave Propagation of Electromagnetic Theory

1 Answer

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Correct option is (d) 1/7

Explanation: The skin depth is the measure of the depth upto which an EM wave can penetrate through the conductor surface. It is the reciprocal of the attenuation constant. On substituting for α = 7, we get δ = 1/α = 1/7 units.

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